Qubit entanglement in multimagnon states
Quantum Physics
2009-11-11 v1
Abstract
The qubit entanglement induced by quasiparticle excitations in the Heisenberg spin chain and its relationship to the Bethe Ansatz structure of the eigenmodes is studied. A phenomenon called entanglement quenching, which suppresses eigenstate entanglement, is described and shown to be mediated by Goldstone magnons. Scattering states are characterized by short-range entanglement, and never exhibit entanglement at the longest range. In contrast, bound states have complex long-range entanglement structures.
Cite
@article{arxiv.quant-ph/0505124,
title = {Qubit entanglement in multimagnon states},
author = {J. S. Pratt},
journal= {arXiv preprint arXiv:quant-ph/0505124},
year = {2009}
}
Comments
10 pages, 7 figures